James cannot look above the hull of the boat without catching multiple rounds of flechette ammo in the face. If you want to put the ballistics mask to the test, we can roll - the AP will be in your favor - but presumably you won't want to. If you do, you'll be at some pretty horrible penalties due to the suppressive fire.
Between the Select Sound Filter and Spatial Recognizer in your ballistic mask, you can pinpoint four different shooters. They are spread out in a fan to the south, we'll say at the 4 o'clock, 5 o'clock, 7 o'clock, and 8 o'clock positions. They are positioned to catch you in the cross-fire. The airboat is headed south, toward the Waveskipper. If you open up the throttle, this will take you directly into the cones of fire. Furthermore, if the sniper rifle is in an elevated position - James would be, if he were the sniper - moving toward the shooter could provide an angle for the shooter to shoot into the boat.
None of the shooters are coming from the direction that the Voudon headed off in. Based on James' knowledge of firearms, he knows that he didn't see any weapons of this caliber in the hands of the Voudon. James can hear at least one of each of the following: assault rifle, automatic shotgun, LMG. These are not the SMGs and machine pistols that the Voudon had.
Illeana is skeptical about the possibility of a grenade, reasoning that the shooters would not want to sink 1) the money or 2) the product. (The shooters may not know which you have.) That said, she feels like drek and isn't necessarily thinking clearly at the moment. There are other things that she would think ICly if she weren't at significant penalties, but she is, so she isn't.
The airboat fan, motor, and gearbox are eating at least four rounds of flechette ammo every second. Granted that the DV is low due to spread and the AP is poor due to flechette and most of it will bounce (producing the aforementioned flechette rain), but eventually - and likely soon - some pellet or flechette is going to find its way through and royally gum things up.
James is one of the world's leading authorities on Mana Surges. He knows and comprehensively understands the IC implications of everything I said OOCly yesterday. He doesn't know how powerful the surge is, but between Illeana's comments and his own understanding of background count he'll know that Illeana's bound spirits are gone, that the remaining fire spirit is significantly weakened, that Illeana's foci are deactivated, that her alchemical preparations may not work any longer, and that her quickened spells are severely diminished but will eventually replenish if removed from the mana surge (provided that the surge doesn't get worse, which would pop the spells). Any type of casting could produce wild and unpredictable effects. This mana surge is likely related to a Dragon Line (a.k.a. Mana Line Type D), which are related to geographic energies.